57 BIOLOGY 



5757 DEGENERATION. 



'5757 Demoor, J., and others. Evolution by atrophy in biology 

 and sociology. Lond. 1899. 



5757 Estabrook, A. H. The Jukes in 1915. Wash. 1916. 

 5757 Key, W. E. Heredity and social fitness. Wash. 1920. 

 5757 Sutton, J. B. Evolution and disease. Lond. 1890. 



'5757 Talbot, E. S. Degeneracy, its causes, signs and results. 



Lond. 1898. 



576 ORIGIN OF LIFE. 



576 Le Dantec, F. Nature and origin of life. Lond. 1907. 



57604 Pasteur, L. Die in der Atmosphare vorhandenen 

 organisirten Korperchen, Priifung der Lehre von 

 der Urzeugung. Leip. 1892. 



576:56 Steinmann, Q. Die Geologischen Grundlagen der 

 Abstammungslehre. Leip. 1908. 



5763 CELLS. 



5763 Doncaster, L. Introduction to the study of cytology. 



Camb. 1920. 



5763 Hertwig, O. Allgemeine Biologic: zweite Auflage des 

 Lehrbuchs " Die Zelle und die Gewebe ". 



Jena 1906- 



5763 Labbe, A. La Cytologie experimentale. Paris 1898. 

 5763 Macfadyen, A. The Cell as the unit of life. Lond. 1908. 

 5763 Minot, C. S. Problem of age, growth and death. 



Lond. 1908. 



'5763 Verworn, M. Die Biogenhypothese. Jena 1903. 



5763 Walker, C. E. Essentials of cytology. Lond. 1907. 

 5763 Wilson, E. B. The Cell in development and inheritance. 



New York 1911, 



'5763 : 58 Laughlin, H. H. Duration of the several mitotic stages 

 in the dividing root-tip cells of the common onion. 



Wash. 191.1). 

 165 



